Chapter 19 Flashcards
P wave on ECG represents
1. repolarization ot the atria
2. repolarization of the ventricle
3. depolarization of the ventricles
4. depolarization of the the atria
depolarization of the the atria
The _____________ prevents backflow from the right ventricle into the right atrium
1. bicuspid valve
2. tricuspid valve
3. pulmonary valve
4. mitral valve
tricuspid valve
Calculate stroke volume given the following: EDV - 120 cc, ESV - 40 cc
1. 160 cc
2. 40 cc
3. 80 cc
4. 70
80cc
Which of the following contains deoxygenated blood?
1. Left atrium
2. Pulmonary vein
3. Right coronary artery
4. Coronary sinus
5. Aorta
Coronary sinus
Put the following components of the conduction system of the heart in the correct order:
- Purkinje Fibers
- SA node
- AV bundle
- AV node
- Bundle Branches
a.) 4 2 3 5 1
b.) 2 3 4 1 5
c.)2 4 3 5 1
d.) 1 5 3 2 4
24351
Which chamber of the heart has the thickest wall?
1. Right atrium
2. Left atrium
3. Right ventricle
4. Left ventricle
Left ventricle
The sequence of contraction of the heart chambers is:
1. Random
2. Left chambers followed by right chambers
3. Both atria followed by both ventricles
4. Both ventricles followed by both atria
Both atria followed by both ventricles
Which of the following is NOT TRUE?
1. The base of the heart rests on the diaphragm
2. The left ventricle is the pump of the systemic circuit.
3. The heart is found in the mediastinum.
4. The heart contains 2 pumps arranged in series.
5. The left ventricle generates more pressure than the right ventricle
The base of the heart rests on the diaphragm
As blood flows from the left atrium to the ascending aorta, its oxygen content will________
1. increase
2. decrease
3. stay the same
4. I don’t know
Stay the same
As end diastolic volume increases , stroke volume will__________________________________________
1. increase
2. decrease
3. stay the same
4. I don’t know
Increase
As blood flows from the aorta to the right atrium , its oxygen content will_______________
1. increase
2. decrease
3. stay the same
4. I don’t know
Decrease
A decrease in venous return will cause stroke volume to _____________________________
1. increase
2. decrease
3. stay the same
4. I don’t know
Decrease
During early ventricular systole (isovolumetric contraction) , the AV valves are ________ and the semilunar valves are __________.
1. Open – open
2. Closed – closed
3. Open – closed
4. Closed – open
closed-closed
How does sympathetic nervous system increase stroke volume?
1. By increasing the venous return
2. By increasing the filling time for the ventricles
3. By increasing contractility of the ventricles
4. By increasing the EDV
By increasing contractility of the ventricles
An increase in contractility will cause stroke volume to __________________________
1. increase
2. decrease
3. stay the same
4. I don’t know
Increase
Which of the following is NOT TRUE of the heart?
1. It is posterior to the sternum and anterior to the vertebral column
2. It is found within the mediastinum
3. It contains 4 chambers
4. The largest chamber (the left ventricle) pumps the most blood
5. The left atrium receives oxygenated blood from the pulmonary circuit
The largest chamber (the left ventricle) pumps the most blood
Which of the following is TRUE?
1. Left ventricular cardiac output is usually less than right ventricular cardiac output.
2. Right ventricular stroke volume is usually less than left ventricular stroke volume.
3. Left ventricular cardiac output is usually more than right ventricular cardiac output.
4. Cardiac output from right ventricle is equal to cardiac output from left ventricle
Cardiac output from right ventricle is equal to cardiac output from left ventricle
Blood is prevented from backflowing INTO the right ventricle by the:
1. mitral valve
2. bicuspid valve
3. pulmonary valve
4. tricuspid valve
5. right atrioventricular valve
pulmonary valve
The following are a list of vessels and structures associated with the heart.
1) Right atrium
2) Left atrium
3) Right ventricle
4) Left ventricle
5) Vena cavae
6) Aorta
7) Pulmonary trunk
8) Pulmonary veins
a.) 1,2,7,8,3,4,6,5
b.) 5,1,3,7,8,2,4,6
c.) 5,3,1,7,8,4,2,6
d.) 5,1,3,8,7,2,4,6
5,1,3,7,8,2,4,6
Which of the following is NOT TRUE?
1. Stroke volume is the amount of blood pumped by each ventricle per second.
2. Cardiac output is the volume of blood pumped by each ventricle per minute.
3. Cardiac output is the product of heart rate and stroke volume
4. Stroke volume is the amount of blood ejected from the ventricle each beat
Stroke volume is the amount of blood pumped by each ventricle per second.
The depression in the adult interatrial septum is the _______________.
1. Foramen ovale
2. Foramen rotundum
3. Fossa ovalis
4. Mitral valve
Fossa ovalis
The right side of the heart is associated with the ___________ circulation and the left side of the heart is associated with the ________ circulation.
- Thoracic; coronary
- Systemic; pulmonary
- Coronary; pulmonary
- Pulmonary; systemic
Pulmonary; systemic
All of the following vessels empty into the right atrium EXCEPT
- Pulmonary trunk
- Superior vena cava
- Inferior vena cava
- coronary sinus
Pulmonary trunk
End diastolic volume is
- amount of blood in each ventricle at the end of the systole
- amount of blood in each ventricle at the end of ventricular diastole
- amount of blood ejected from the ventricle with each heart beat
- amount of blood ejected from each ventricle in one minute
amount of blood in each ventricle at the end of ventricular diastole
Pericardial fluid is found between the parietal serous pericardium and the _____________.
- Myocardium
- Endocardium
- Epicardium
- Fibrous pericardium
Epicardium
Which of the following has the fastest rate of spontaneous rhythmic depolarization?
- AV node
- Bundle of His
- Bundle branches of His
- Sinoatrial node
Sinoatrial node
Excessively high heart rate will cause ventricular filling time to __________________, end diastolic volume to _____________________ preload to ___________________ and stroke volume to _______________________.
- increase /increase/ increase / increase
- decrease / decrease /decrease / decrease
- decrease/ increase / increase / decrease
- increase/ decrease / increase / decrease
decrease / decrease /decrease / decrease
Which of the following links AV valve flaps to the papillary muscles?
- Pectinates
- Trabeculae carneae
- Chordae tendineae
- Moderator banditos
Chordae tendineae
A moderate increase in ventricular stretch due to increased venous return would _________________________ contractility of the ventricle.
- increase
- decrease
- stay the same
- I don’t know
Increase
Increase in afterload will lead to ______________________of stroke volume
- increase
- decrease
- stay the same
- I don’t know
decrease
The 2nd heart sound is heard when the:
- Atrioventricular valves close
- Atrioventricular valves open
- Semilunar valves open
- Semilunar valves close
Semilunar valves close
What structures work to prevent prolapse (i.e., flipping up) of the atrioventricular valves?
- Trabeculae carneae
- Pectinate muscles
- chordae tendineae
- legamentum arteriosum
chordae tendineae
Which of the following describe(s) cardiac contractile cells?
- Striated
- Branching
- Uninucleate
- Most numerous cell in the myocardium
- All of the above
All of the above
The S1(first) sound of the heart is caused by the _______ of the ______.
- Opening; AV valves
- Closing; AV valves
- Opening; semilunar valves
- Closing; semilunar valves
Closing; AV valves
